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Surfactant-Free and Controlled Synthesis of Hexagonal CeVO4 Nanoplates: Photocatalytic Activity and Superhydrophobic Property.

Yang X, Zuo W, Li F, Li T - ChemistryOpen (2015)

Bottom Line: During synthesis, solution pH, and reaction temperature were found to play important roles in determining the growth process and final morphologies of the CeVO4 products.The largest CA measured was at 169.5 ° for a glass substrate treated with 0.06 g mL(-1) CeVO4 followed by 2 % 1 H, 1 H, 2 H, 2 H-perfluorodecyltriethoxysilane.Finally, the CeVO4 nanoplates exhibited excellent photocatalytic activity in degradation of rhodamine B (RhB) under UV irradiation and was stable even after repeated cycles of use.

View Article: PubMed Central - PubMed

Affiliation: College of Chemistry, Key Lab of Environment Friendly Chemistry and Application of the Ministry of Education, Xiangtan University Xiangtan, 411105, P. R. China.

ABSTRACT
Nanomaterials with both superhydrophobic surface properties as well as photocatalytic activities could have important industrial applications. Herein, we synthesized CeVO4 nanocrystals with hexagonal nanoplate structures from the reaction of decavanadate (K6V10O28⋅9 H2O) and CeCl3⋅H2O precursors via a hydrothermal method. This synthetic route has four advantages: 1) the reaction condition is relatively mild, 2) it doesn't need surfactants or templates, 3) it requires no expensive equipment, and 4) products are of higher purity. During synthesis, solution pH, and reaction temperature were found to play important roles in determining the growth process and final morphologies of the CeVO4 products. These products were characterized spectrophotometrically and via scanning and transmission electron microscopy. Furthermore, the wettability of the as-synthesized film CeVO4 nanoplates was studied by measuring water contact angle (CA). The largest CA measured was at 169.5 ° for a glass substrate treated with 0.06 g mL(-1) CeVO4 followed by 2 % 1 H, 1 H, 2 H, 2 H-perfluorodecyltriethoxysilane. Finally, the CeVO4 nanoplates exhibited excellent photocatalytic activity in degradation of rhodamine B (RhB) under UV irradiation and was stable even after repeated cycles of use.

No MeSH data available.


TEM images of the CeVO4 nanocrystals synthesized under 140 °C at pH 8 (A), pH 9 (B), and pH 10 (C). The scale bars represent 0.2 μm, 0.5 μm, and 0.2 μm, for (A), (B), and (C), respectively.
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fig05: TEM images of the CeVO4 nanocrystals synthesized under 140 °C at pH 8 (A), pH 9 (B), and pH 10 (C). The scale bars represent 0.2 μm, 0.5 μm, and 0.2 μm, for (A), (B), and (C), respectively.

Mentions: In order to better understand the formation and evolution of CeVO4 nanostructures at 140 °C, the product morphology at this temperature but different pH values was explored. The TEM image of the product obtained at pH 8 is shown in Figure 5 A. It is clearly seen that the product is composed of rod-like particles with nonhomogeneous size distribution, accompanied by the appearance of irregular-shaped plates. When the pH was adjusted to 9, hexagonal nanoplates were formed, and rod-like particles disappeared (Figure 5 B). At pH 10, abundant rod-like particles appeared with lengths of about 20 nm. These were different from those observed at pH 8, as these rod-like particles were longer and thinner than the morphology at the lower pH (Figure 5 C).


Surfactant-Free and Controlled Synthesis of Hexagonal CeVO4 Nanoplates: Photocatalytic Activity and Superhydrophobic Property.

Yang X, Zuo W, Li F, Li T - ChemistryOpen (2015)

TEM images of the CeVO4 nanocrystals synthesized under 140 °C at pH 8 (A), pH 9 (B), and pH 10 (C). The scale bars represent 0.2 μm, 0.5 μm, and 0.2 μm, for (A), (B), and (C), respectively.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4522178&req=5

fig05: TEM images of the CeVO4 nanocrystals synthesized under 140 °C at pH 8 (A), pH 9 (B), and pH 10 (C). The scale bars represent 0.2 μm, 0.5 μm, and 0.2 μm, for (A), (B), and (C), respectively.
Mentions: In order to better understand the formation and evolution of CeVO4 nanostructures at 140 °C, the product morphology at this temperature but different pH values was explored. The TEM image of the product obtained at pH 8 is shown in Figure 5 A. It is clearly seen that the product is composed of rod-like particles with nonhomogeneous size distribution, accompanied by the appearance of irregular-shaped plates. When the pH was adjusted to 9, hexagonal nanoplates were formed, and rod-like particles disappeared (Figure 5 B). At pH 10, abundant rod-like particles appeared with lengths of about 20 nm. These were different from those observed at pH 8, as these rod-like particles were longer and thinner than the morphology at the lower pH (Figure 5 C).

Bottom Line: During synthesis, solution pH, and reaction temperature were found to play important roles in determining the growth process and final morphologies of the CeVO4 products.The largest CA measured was at 169.5 ° for a glass substrate treated with 0.06 g mL(-1) CeVO4 followed by 2 % 1 H, 1 H, 2 H, 2 H-perfluorodecyltriethoxysilane.Finally, the CeVO4 nanoplates exhibited excellent photocatalytic activity in degradation of rhodamine B (RhB) under UV irradiation and was stable even after repeated cycles of use.

View Article: PubMed Central - PubMed

Affiliation: College of Chemistry, Key Lab of Environment Friendly Chemistry and Application of the Ministry of Education, Xiangtan University Xiangtan, 411105, P. R. China.

ABSTRACT
Nanomaterials with both superhydrophobic surface properties as well as photocatalytic activities could have important industrial applications. Herein, we synthesized CeVO4 nanocrystals with hexagonal nanoplate structures from the reaction of decavanadate (K6V10O28⋅9 H2O) and CeCl3⋅H2O precursors via a hydrothermal method. This synthetic route has four advantages: 1) the reaction condition is relatively mild, 2) it doesn't need surfactants or templates, 3) it requires no expensive equipment, and 4) products are of higher purity. During synthesis, solution pH, and reaction temperature were found to play important roles in determining the growth process and final morphologies of the CeVO4 products. These products were characterized spectrophotometrically and via scanning and transmission electron microscopy. Furthermore, the wettability of the as-synthesized film CeVO4 nanoplates was studied by measuring water contact angle (CA). The largest CA measured was at 169.5 ° for a glass substrate treated with 0.06 g mL(-1) CeVO4 followed by 2 % 1 H, 1 H, 2 H, 2 H-perfluorodecyltriethoxysilane. Finally, the CeVO4 nanoplates exhibited excellent photocatalytic activity in degradation of rhodamine B (RhB) under UV irradiation and was stable even after repeated cycles of use.

No MeSH data available.